JP2013526476A5

JP2013526476A5 -

Info

Publication number: JP2013526476A5
Application number: JP2013512194A
Authority: JP
Filing date: 2011-05-25
Publication date: 2014-06-26
Anticipated expiration: 2031-05-25

Claims

A method of thermally strengthening the glass container after completion of the formation of the glass container at the hot end of the glass container production line having a vertical axis ,
Following the completion of the glass container forming process, the step of reheating the glass container, the temperature of the glass container being sufficiently high to obtain an appropriate compressive stress inside the glass container Raising the temperature to a temperature that is not high enough to deform the glass container;
Each of the glass containers is disposed within an interior cavity of a generally cylindrical cooling shroud, the cooling shroud having a first open end, a second open end, an inner surface, and an outer surface. Each glass container enters the internal cavity through the first open end, and the cooling shroud includes a first set of holes and a second set of holes;
The way all glass container stress is fixed, the outer surface and the inner surface of the glass container containing the inner surface and the outer surface of the bottom of the glass container, comprising the steps of simultaneously rapidly cooling, cooling Fluid is directed from the first set of holes substantially perpendicular to the respective longitudinal axis of the glass container, and cooling fluid is directed from the second set of holes toward the glass container. Including guiding at an angle that is not orthogonal to:
Including methods.

The glass container is formed by an IS machine,
The reheating step is performed after the fully formed glass container is discharged from the IS machine ;
The method of claim 1 , wherein the cooling fluid directed into the second set of holes is directed toward the second end of the cooling shroud at an acute angle with the inner surface of the cooling shroud .

The glass container, the glass container manufacturing operation, are formed or et cooling,
The reheating step, the method according to claim 1 which is performed after the forming and cooling of the glass container.

The temperature at which the glass container is reheated in the reheating step is sufficiently high to allow the cooling step to quickly fix all stresses in the glass container. Item 2. The method according to Item 1.

The method according to claim 1, wherein the temperature at which the glass container is reheated in the reheating step is a temperature lower than a softening point of glass used in the glass container.

The method of claim 1, wherein the temperature at which the glass container is reheated in the reheating step is approximately 620 ° C. or higher.

The method of claim 1, wherein the temperature at which the glass container is reheated in the reheating step is between approximately 620 ° C and approximately 680 ° C.

The method of claim 1, wherein the glass container is reheated in a special tempering glass annealing furnace.

In order to minimize the cooling of the glass container before it is formed in an IS machine and the glass container enters the special tempering glass annealing furnace, the special tempering glass annealing furnace comprises the IS the method of claim 8, which is placed immediately downstream of the machine.

The method of claim 9, wherein the glass container formed in the IS machine is generally between approximately 500 ° C and approximately 600 ° C when entering the special tempering glass annealing furnace.

9. The method of claim 8, wherein the special tempered glass annealing furnace is set at approximately 600 ° C. at its inlet and approximately 715 ° C. at its outlet.

9. The method of claim 8, wherein the glass container is reheated in the special tempered glass annealing furnace from approximately 2 minutes and 30 seconds to approximately 3 minutes and 30 seconds.

The method according to claim 1, wherein the temperature at which the glass container is cooled in the cooling step is a temperature lower than a strain point of glass used in the glass container.

The method of claim 1, wherein the temperature at which the glass container is cooled in the cooling step is between approximately 450 degrees Celsius and approximately 400 degrees Celsius.

The method of claim 1, wherein the temperature at which the glass container is cooled in the cooling step is approximately 450 degrees Celsius.

The method of claim 1, wherein the glass container is cooled in the cooling step such that all stresses in the glass container are fixed in approximately 15 seconds to less than approximately 20 seconds.

The method of claim 1, further comprising the step of further reducing the temperature of the glass container from approximately 100 ° C. to approximately 150 ° C. following completion of the cooling step.

The cooling shroud includes a bottom cooling mechanism;
The cooling step comprises:
Directing the cooling fluid from the bottom cooling mechanism from a position inside the cylindrical cooling shroud between the first end and the second end of the cylindrical cooling shroud;
Cooling the outside of each glass container by directing a plurality of jets of cooling air to the outside of the glass container and around its entire circumference;
A cooling tube having a tube nozzle at the distal end and delivering cooling air to the inside of the glass container is inserted into the glass container, and the cooling tube and the tube nozzle are vibrated 1 to 6 times By cooling the interior of the glass container,
Cooling the bottom surface of the glass container by guiding cooling air from the bottom cooling mechanism to the bottom surface of the glass container,
The method of claim 1, wherein the step of cooling the outside of the glass container, the step of cooling the interior of the glass container, and the step of cooling the bottom surface of the glass container are all performed simultaneously. .

A method of thermally strengthening a glass container produced by an IS machine in a glass container production line at an intermediate position between a hot end where the glass container is molded and a cold end where the glass container is inspected,
Minimize the cooling of the glass container before entering the special tempering glass annealing furnace after the glass container forming process is finished and the glass container is discharged from the IS machine. to, and then re-heating the glass container in the lehr of the special tempered immediately is placed downstream of the iS machine, the temperature of the glass container, suitable in the glass container Raising the temperature sufficiently high to obtain a compressive stress, but below the softening point of the glass used in the glass container and not high enough to deform the glass container;
A generally cylindrical cooling shroud extending in a direction along the longitudinal axis from the first open end to the second end; and a generally central opening that is coaxial with the cylindrical cooling shroud. An annular bottom cooling element defining a cooling mechanism, wherein the cooling mechanism is configured to direct cooling fluid to an outer surface and an inner surface of the glass container, the annular bottom cooling element Is configured to direct cooling fluid radially from a position between the central opening and the cooling shroud;
Moving the cooling mechanism to the glass container;
The outer surface and the inner surface of the glass container are rapidly moved simultaneously at a temperature below the strain point of the glass used for the glass container in approximately 15 seconds to less than approximately 20 seconds so that all the stress of the glass container is fixed. Cooling to the method.

A method of thermally strengthening a formed glass container,
Reheating the glass container to raise the temperature of the glass container to a sufficiently high temperature to obtain a suitable compressive stress inside the glass container;
Providing an annular bottom cooling mechanism and a cylindrical cooling mechanism extending from a first open end to a second end, wherein the bottom cooling mechanism directs cooling fluid within the cylindrical cooling mechanism; A step configured to direct substantially upward from a position between the first end and the second end in the direction of the first open end;
Lifting each glass container over the cylindrical cooling mechanism;
Moving one of the cylindrical cooler and the glass container to place the glass container through the first open end into the cylindrical cooling mechanism;
Rapidly cooling the outer and inner surfaces of the glass container at the same time to fix all of the stress in the glass container.